/** Sets up and starts streaming pipeline. */
public static void main(String[] args) {
PubsubFileInjectorOptions options =
PipelineOptionsFactory.fromArgs(args).withValidation().as(PubsubFileInjectorOptions.class);
Pipeline pipeline = Pipeline.create(options);
pipeline
.apply(TextIO.Read.from(options.getInput()))
.apply(
IntraBundleParallelization.of(PubsubFileInjector.publish(options.getOutputTopic()))
.withMaxParallelism(20));
pipeline.run();
}
/**
* Runs the batch injector for the streaming pipeline.
*
* <p>The injector pipeline will read from the given text file, and inject data into the Google
* Cloud Pub/Sub topic.
*/
public void runInjectorPipeline(String inputFile, String topic) {
DataflowPipelineOptions copiedOptions = options.cloneAs(DataflowPipelineOptions.class);
copiedOptions.setStreaming(false);
copiedOptions.setNumWorkers(
options.as(ExamplePubsubTopicOptions.class).getInjectorNumWorkers());
copiedOptions.setJobName(options.getJobName() + "-injector");
Pipeline injectorPipeline = Pipeline.create(copiedOptions);
injectorPipeline
.apply(TextIO.Read.from(inputFile))
.apply(
IntraBundleParallelization.of(PubsubFileInjector.publish(topic))
.withMaxParallelism(20));
DataflowPipelineJob injectorJob = (DataflowPipelineJob) injectorPipeline.run();
jobsToCancel.add(injectorJob);
}